RU152470U1 - DEVICE FOR ISOLATING BUTANOL FROM AQUEOUS SOLUTIONS - Google Patents

Abstract

1. A device for separating butanol from aqueous solutions, consisting of a working tank with a continuously maintained level of the solution, an ultrasonic generator focusing ultrasound on the surface layer of the solution, a pipe for supplying air and a channel for moving the aerosol, characterized in that the device is equipped with a water seal installed behind the tank with a concentrate solution and a trap for an aerosol with the possibility of condensation into a solution, with a nozzle for opening ode of air, and in the lower part of the pipe to drain the resulting solution with a higher concentration of butanol than in the initial solution. 2. The device according to claim 1, characterized in that the pipe located in the lower part of the water seal is equipped with a faucet for draining the resulting solution.

Description

The utility model relates to biotechnology and is aimed, in particular, for the isolation of butanol from dilute aqueous solutions and biotechnological media.

Traditional technologies and devices for the separation of butyl alcohol from a biotechnological environment, consisting mainly of water, are associated either with high energy costs due to the high boiling point of butanol (118 ° C), (Sushkova V.I., Yarotsky S.V. Efficiency of separation methods acetone-butyl fermentation products. Chemistry of Plant Raw Materials, 2011, No. 3, pp. 5-14.), or with the need for relatively frequent replacement or restoration of the initial properties of functional elements: membranes or sorbents, on which butanol (Shaposhnik V.A. Membrane electrochemistry. Soros Educational Journal, 1999, No. 2, pp. 71-77). The prior art device for the separation of organic substances by pervaporation separation of liquid mixtures according to the patent of the Russian Federation for invention (RU 2408416, IPC: B01D 61/00, published January 10, 2011. Containing two circuits through which solutions of organic matter in water of different temperatures circulate which are separated from each other by two membranes made of poly (1-trimethylsilyl-1-propine) (PTMSP), which are selective in terms of the emitted organic matter, separated by a gas gap.

The main disadvantage of the known device is the need to replace or restore the original properties of functional elements - membranes.

Closest to the proposed utility model relates to a device according to the patent of the Russian Federation for invention (RU 2376079, IPC: B05B 17/06, publ. 12/20/2009), which we adopted as a prototype and consisting of a working tank with a constantly maintained solution level and a focusing ultrasound emitter generating aerosol from the surface layer and providing micronized particles.

The disadvantage of the prototype is that in this design, the device is not suitable for the concentration of butanol solutions.

The objective of the proposed utility model is to increase the efficiency of the method of separation of butanol (butyl alcohol) from dilute aqueous solutions and simplifying the design.

The essence of the utility model is that a device for separating butanol (butyl alcohol) from aqueous solutions contains a working tank with a constantly maintained solution level, a reservoir supplying the solution to the working tank, a level gauge of the concentrated solution, an ultrasonic generator focusing ultrasound on the surface layer solution, a pipe for supplying air, a channel for the passage of the resulting aerosol. The difference, according to the utility model, is that the device is equipped with a water trap installed behind the reservoir with the concentrate solution and made in the form of an aerosol trap with the possibility of condensation of the aerosol into the solution enriched with butanol, while a nozzle for venting air is placed in the upper part of the gas trap, and in the lower part parts of the pipe, equipped with a faucet to drain the resulting solution with a higher concentration of butanol than in the initial solution.

The technical result consists in the fact that the device according to the proposed utility model can be used both in laboratory and in industrial practice, for concentrating dilute butyl alcohol solutions.

The principle of operation of the claimed utility model is based on the known effect of surface sorption.

The implementation of the separation process on the proposed device for the separation of butanol is carried out by means of an ultrasonic generator that focuses the ultrasound on the subsurface liquid layer and leads to the formation of an aerosol from the surface layer enriched with butanol. The aerosol moves along the channel into the water trap where it condenses into the solution, with a higher concentration of butanol than in the initial solution.

In addition, the inherent principle and technical implementation of the utility model in comparison with analogues provide:

- reduction of energy consumption, since the formation of an aerosol is not accompanied by the expenditure of energy for breaking almost all intermolecular bonds, and heating of the medium is not required;

- eliminating the need for regeneration of filters, sorbents and other functional elements.

The proposed utility model is illustrated by drawings, which depict:

in FIG. 1 is a diagram of a device;

in FIG. 2 is a diagram of the experiments (the dependence of the coefficient of concentration of butanol on the initial concentration of the solution).

The proposed utility model consists of a working tank 1 with a solution to be concentrated, a tank 2 connected to a working tank 1 through a level gauge of the concentrated solution 3 and constantly supplying a concentrated solution to the working tank 1, which is subjected to the focusing action of the ultrasonic generator 4 at the surface, pipe 5 for feeding air, pipe 6 for venting air, channel 7, for moving the resulting aerosol into a water lock 8, made in the form of an aerosol trap, installed sequentially for reservoir 2, where the aerosol is transformed (by condensation) into a solution, and a nozzle 9 with a faucet - to remove the resulting solution from the water seal. The device operates as follows:

The working container 1 is filled with a solution to be concentrated, constantly coming from the tank 2 and maintained at a predetermined level by means of a level adjuster of the concentrated solution 3. Using a focusing ultrasonic generator 4, an aerosol enriched in the emitted substance is formed from the surface layer of the initial solution in the working container 1. An air stream is supplied through the nozzle 5 to the working container 1, which carries away the aerosol formed through the channel 7 to the air trap 8, made in the form of an aerosol trap, where the latter is condensed back into the solution enriched with butanol. Air is discharged from the water trap through a nozzle 6 located in the upper part of the water trap 8, and the solution obtained with a high concentration of butanol is discharged through a pipe 9 equipped with a faucet and placed in the lower part of the water trap 8.

The effectiveness of the device is confirmed by the results of experiments conducted on it and expressed as:

- diagrams (Fig. 2), which shows the dependence of the butanol concentration coefficient (concentration coefficient K _s ) in the initial solution C _ref (temperature of the initial solution 20 ° C), and in the final solution obtained by the reverse transformation of aerosol C _con .

K _c = C _ref / C _con

- tables for evaluating the degree of refractive index of butanol (butyl alcohol) in the initial aqueous solution and in the resulting condensate.

From the data obtained it follows that the higher the concentration of a solution of butanol in water, the lower the concentration coefficient. This nature of the dependence does not contradict the concept of surface sorption, in which the difference in the concentration of surfactant at the surface and in the volume, the greater, the lower the concentration of this substance in the volume.

Thus, the set of distinctive features of the described technical solution ensures the achievement of the specified result.

The utility model allows to increase the efficiency of the method of separation of butanol from dilute aqueous solutions, and butanol (butyl alcohol) can be used in various industries, for example, as fuel for internal combustion engines.

Claims (2)

1. A device for separating butanol from aqueous solutions, consisting of a working tank with a continuously maintained level of the solution, an ultrasonic generator focusing ultrasound on the surface layer of the solution, a pipe for supplying air and a channel for moving the aerosol, characterized in that the device is equipped with a water seal installed behind the tank with a concentrate solution and a trap for an aerosol with the possibility of condensation into a solution, with a nozzle for opening ode of air, and in the lower part of the pipe to drain the resulting solution with a higher concentration of butanol than in the initial solution. 2. The device according to p. 1, characterized in that the pipe located in the lower part of the water seal is equipped with a faucet to drain the resulting solution.

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